Overview

Uterine polyps

Uterine polyps

Uterine polyps attach to your uterus by a large base or a thin stalk and can grow to be several centimeters in size. Irregular menstrual bleeding, bleeding after menopause, excessively heavy menstrual flow or bleeding between periods could signal the presence of uterine polyps.

Uterine polyps are growths attached to the inner wall of the uterus that extend into the uterine cavity. Overgrowth of cells in the lining of the uterus (endometrium) leads to the formation of uterine polyps, also known as endometrial polyps. These polyps are usually noncancerous (benign), although some can be cancerous or can eventually turn into cancer (precancerous polyps).

Uterine polyps range in size from a few millimeters — no larger than a sesame seed — to several centimeters — golf-ball-size or larger. They attach to the uterine wall by a large base or a thin stalk.

You can have one or many uterine polyps. They usually stay contained within your uterus, but occasionally, they slip down through the opening of the uterus (cervix) into your vagina. Uterine polyps most commonly occur in women who are going through or have completed menopause, although younger women can get them, too.

Some women have only light bleeding or spotting; others are symptom-free.

When to see a doctor

Seek medical care if you have:

Vaginal bleeding after menopause

Bleeding between menstrual periods

Irregular menstrual bleeding

Causes

Hormonal factors appear to play a role. Uterine polyps are estrogen-sensitive, meaning they grow in response to circulating estrogen.

Risk factors

Risk factors for developing uterine polyps include:

Being perimenopausal or postmenopausal

Having high blood pressure (hypertension)

Being obese

Taking tamoxifen, a drug therapy for breast cancer

Complications

Uterine polyps might be associated with infertility. If you have uterine polyps and you're unable to have children, removal of the polyps might allow you to become pregnant, but the data are inconclusive.

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